Home / 1,221,397.80-1,685,539.08-677,569.20

Finding the Fourth Proportional to 1,221,397.80, 1,685,539.08 and 677,569.20

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Solution

The fourth proportional to 1,221,397.80, 1,685,539.08 and 677,569.20 is: 935,051.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,221,397.80 : 1,685,539.08 = 677,569.20 : x
  2. Step 2: Convert to fraction form
    1,221,397.80/1,685,539.08 = 677,569.20/x
  3. Step 3: Cross multiply
    1,221,397.80x = 1,685,539.08 × 677,569.20
  4. Step 4: Simplify right side
    1,221,397.80x = 1,142,069,366,004.34
  5. Step 5: Solve for x
    x = 1,142,069,366,004.34/1,221,397.80
  6. Step 6: Final answer
    x = 935,051.11

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.